Bar’s Leaks

What Bar’s Leaks does

Bar's Leaks is a privately held U.S. manufacturer of chemical automotive leak-repair products, founded in 1947 and headquartered in Holly, Michigan, approximately one hour outside Detroit. The company designs, formulates, and manufactures its entire product line domestically and holds ISO 9001:2015 certification. It positions itself as "America's #1 chemical repair brand," with 75+ years of continuous operation and millions of cumulative users.

The product portfolio consists of 18 distinct SKUs across six categories — Block & Head Gasket, Cooling System, Engine, Gear Oil, Hydraulics, Power Steering, and Transmission. Core technologies include antifreeze-compatible sodium silicate liquid-glass formulas, carbon fiber reinforced gasket-sealing particles, aramid and refractory fiber blends, and the proprietary Xtreme Cool additive that reduces coolant surface tension. Flagship products include Head Gasket Fix (1111), which has sold over 2 million bottles since its 2004 launch, and the professional-grade Head Seal HG-1, winner of the PTEN Top 100 Award in 2016. Products are priced between approximately $10 and $40 per unit and sold on a one-time purchase basis.

Bar's Leaks operates a product-led, channel-partner go-to-market strategy. Its primary customer segment is DIY vehicle owners and weekend mechanics seeking affordable alternatives to professional repair ($1,500-$3,000 for head gasket replacement). Products are distributed through all major U.S. auto parts retailers — O'Reilly Auto Parts, AutoZone, Advance Auto Parts, NAPA Auto Parts, Walmart — and Amazon. The company employs a lean team (11-50 employees) including in-house chemical engineers and supports customers with a website featuring how-to videos, customer testimonials, a store locator, and symptom-based product navigation.

Name

Bar’s Leaks

Legal name

Bar's Leaks

Website

https://barsleaks.com

Company type

Private

Founded year

1947

Operating status

Operating

Headcount range

11–50 employees

Short description

Bar's Leaks is a privately held U.S. manufacturer of chemical automotive leak-repair products, selling 18 SKUs through major U.S. auto parts retailers to DIY vehicle owners. Founded in 1947 in Michigan, the company specializes in sodium silicate and fiber-based sealants for cooling systems, engines, transmissions, and hydraulics.

Ownership category

akta.pro rank

Product category

Automotive Chemical Repair Products

NAICS

Automotive Parts and Accessories Retailers (44133), Automotive Parts and Accessories Retailers (441330)

SIC

Gaskets, Packg & Sealg Devices & Rubber & Plastics Hose (3050), Wholesale-Motor Vehicle Supplies & New Parts (5013), Miscellaneous Chemical Products (2890)

akta.pro primary industry

Adhesives, Sealants, Caulks & Tapes Retail (CRAIADAL)

Keywords

• Automotive leak repair
• Head gasket sealants
• Cooling system additives
• Engine stop leak
• Transmission repair chemicals

Headquarters

HQ city

Holly

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2C

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Marketing or Sales

Revenue model

1. Automotive Chemical Additive Products: One-time purchase model for automotive leak repair and maintenance chemical products. Products are sold as single bottles/units targeting specific repair needs (head gaskets, radiators, engines, transmissions, power steering, hydraulics). No subscription or recurring revenue components.

Pricing tiers

Go-to-market motion2 records

Distribution channels6 records

Marketing channels5 records

Core offering

Bar's Leaks manufactures and markets a portfolio of chemical repair additives that allow vehicle owners to seal leaks themselves in cooling systems, head gaskets, engines, transmissions, power steering, gears, and hydraulics. Its 18 products, organized across six application categories, are designed for easy non-expert use, sold as single bottles at consumer price points, and distributed through major U.S. auto parts retailers and online marketplaces.

Product overview

Bar's Leaks is a comprehensive line of automotive chemical repair solutions designed for everyday drivers and DIY mechanics to fix leaks in all types of vehicles. The product portfolio consists of 18 distinct products across six categories: Block & Head Gasket (4 products including Block Seal Liquid Copper 1109, Head Gasket Fix 1111, Head Gasket Sealant 1100, and Head Seal HG-1), Cooling System (4 products including Cooling System Repair 1150, Liquid Aluminum 1186, Radiator Stop Leak Tablets 1177, and Radiator Stop Leak 1199), Engine (4 products including Oil Seal OS-1, High Mileage Engine Repair 1000, Rear Main Seal Repair 1040, and One Seal 1334), Gear Oil (1 product - Gear Repair 1816), Hydraulics (2 products including Hydraulic Seal H60 and Jack Oil HJ12), Power Steering (1 product - Power Steering Repair 1600), and Transmission (2 products including Trans Fix 1415 and Transmission Repair 1400). These products utilize various chemical technologies including sodium silicate formulas, carbon fiber reinforcement, aramid/refractory fiber blends, and proprietary Xtreme Cool technology to permanently seal leaks in cooling systems, engines, transmissions, power steering, and hydraulic systems. The company positions itself as America's #1 chemical repair brand with over 75 years of experience.

Differentiator

Problem solved

Functional benefit

Products and services

• Block Seal Liquid Copper Coolant Leak Fix (1109) Antifreeze-compatible sodium silicate liquid-glass formula that permanently repairs larger coolant leaks in radiators, intake manifolds, heater cores, blocks, heads, and freeze plugs without draining the cooling system. One bottle treats cooling systems up to 6 gallons. Sold to DIY vehicle owners and repair shops.
• Head Gasket Fix (1111) Bestselling antifreeze-compatible sodium silicate formula with gasket-sealing particles that penetrate gaps and cracks to permanently stop head gasket leaks. Treats 8–16 quart cooling systems and is sold to DIY vehicle owners seeking an alternative to costly head-gasket replacement.
• Head Gasket Sealant (1100) Aramid and refractory fiber blend that forms a hard permanent ceramic-type seal for cracked heads and blown head gaskets. Not compatible with antifreeze; requires flushing before use. For 2–6 gallon cooling capacity. Aimed at DIYers and mechanics doing head-gasket repairs.
• Head Seal Blown Head Gasket Repair (HG-1) Professional-grade carbon fiber reinforced formula combining sodium silicate sealing liquid with specialized gasket sealing particles that penetrate gaps and cracks and harden to create permanent ceramic-type seals claimed stronger than original gaskets. The strongest antifreeze-compatible solution in the portfolio. Treats 2.5–5 gallon systems and is aimed at DIYers and professional mechanics.
• High Mileage Cooling System Repair (1150) Next-generation formula with Xtreme Cool technology that stops coolant leaks, reduces antifreeze loss, prevents overheating, and is positioned as delivering twice the cooling system repair performance versus competing products. Treats systems up to 4 gallons. Sold to DIY high-mileage vehicle owners.
• Liquid Aluminum Cooling System Stop Leak (1186) Next-generation formula that safely seals instantly and stops coolant leaks using Xtreme Cool technology, marketed with guaranteed cooling system protection. Intended for DIYers needing an immediate sealing solution in radiators and related cooling components.
• Radiator Stop Leak Tablets (1177) Tablet formulation that seals leaks and seepage, helps control electrolysis, lubricates the water pump, and inhibits rust and scale in cooling systems. Aimed at DIYers who prefer a tablet over a liquid additive.
• Radiator Stop Leak (1199) Protects the entire cooling system and stops current and future leaks. Suitable for cars, trucks, SUVs, and RVs. Marketed to DIY owners seeking broad-compatibility cooling system protection.
• Oil Seal Engine Oil Burning & Leak Repair (OS-1) Professional-grade oil leak repair that repairs leaking main seals and gaskets, renews worn valve seals and guides, and stops oil burning and blue exhaust smoke. Targeted at DIYers addressing engine oil leaks and burning without engine disassembly.
• High Mileage Engine Repair (1000) Replaces 6 separate engine additives in one bottle. Stops and seals oil leaks, restores compression, horsepower, and fuel efficiency, reduces engine noise and ticking, and eliminates exhaust smoking. Works with all oil types. Sold to DIYers servicing high-mileage vehicles.
• Heavy Duty Rear Main Seal Repair (1040) Heavy duty formula that stops all oil leaks and seals timing cover, cam seal, and rear main leaks. Restores shrunk and hardened seals. Targeted at DIYers facing major rear main seal and timing cover leaks.
• One Seal Stop Leak (1334) Multi-purpose additive that works with all oil and fluid types to seal minor engine, transmission, and steering leaks. Marketed as easy to use and safe for gas, turbo, and diesel engines. Aimed at DIYers wanting a single multi-system product.
• Axle & Differential Gear Repair (1816) Seal conditioner and friction modifier performance additive booster for gear oils. Seals leaks and stops noise. Use with all synthetic and petroleum gear oils. Sold to DIYers maintaining axles and differentials.
• Heavy Duty Hydraulic Seal (H60) Keeps hydraulic seals pliable, reduces friction and wear in hydraulic systems, and prevents formation of sludge and varnish. Ideal for construction and industrial machinery. Targeted at professional operators and industrial DIYers.
• Jack Oil with Stop Leak (HJ12) Excellent for snow plow hydraulic leaks. Works in all floor and bottle jacks and is safe for all approved hydraulic jack oils. Repairs jacks, shocks, lifts, and rams. Aimed at DIYers maintaining hydraulic lifting equipment.
• High Mileage Power Steering Repair (1600) Reduces noise and fixes hard steering, stops leaks, and reconditions rack and pinion. Hundreds of thousands of bottles sold. Targeted at DIY owners of high-mileage vehicles with power steering issues.
• Trans Fix (1415) Synthetic blend technology safe for ALL transmissions, including automatic, manual, CVT, and DCT. Stops slipping, hesitation, and fluid leaks. Sold to DIYers addressing transmission performance issues across transmission types.
• High Mileage Automatic Transmission Repair (1400) Reduces heat, friction, and stabilizes fluid. Stops leaks, slipping, and rough shifting in automatic transmissions. Aimed at DIYers of older vehicles seeking smoother automatic transmission performance.

Named customers2 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Six partnerships are on record, tiered core.

• AmazoncoreChannel Partner/ Reseller/ DistributorE-commerce retail partnership for online product sales. Bar's Leaks products available for purchase through Amazon marketplace with direct shop links on product pages.
• O'Reilly Auto PartscoreChannel Partner/ Reseller/ DistributorPrimary retail distribution partner. Products available for purchase in-store and online through O'Reilly's website with store pickup options.
• AutoZonecoreChannel Partner/ Reseller/ DistributorMajor retail distribution partner. Products available through AutoZone's physical locations and website with search functionality by product number.
• Advance Auto PartscoreChannel Partner/ Reseller/ DistributorKey retail distribution partner with store pickup capabilities. Direct shop links provided on product pages.
• NAPA Auto PartscoreChannel Partner/ Reseller/ DistributorNAPAonline.com distribution partner. Products available through NAPA's automotive parts retail network.
• WalmartcoreChannel Partner/ Reseller/ DistributorRetail distribution partnership making products available at Walmart stores nationwide and on Walmart.com.

Scale indicators5 records

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• STP: STP is a heritage automotive additives and chemical brand offering fuel, oil, and cooling system treatments. Its stop-leak and radiator products compete with Bar's Leaks' cooling-system SKUs at mass retail and auto parts stores.
• Prestone: Prestone is a major automotive chemical brand best known for antifreeze/coolant, and it sells stop-leak additives and cooling system treatments that directly compete with Bar's Leaks' cooling-system product line at the same retail outlets.
• Gold Eagle Company: Gold Eagle manufactures automotive chemical brands including HEET, Sta-Bil, and Hot Shot's Secret, sold through the same auto parts and mass-market retailers as Bar's Leaks, with overlapping fuel-system and engine-treatment categories.
• Permatex: Permatex is an established brand of sealants, gasketing, threadlockers, and adhesives for automotive and industrial repair. It overlaps with Bar's Leaks in chemical leak repair and is sold through the same major auto parts retailers.

Direct peers

• BlueDevil Products: BlueDevil manufactures chemical stop-leak and seal-restoration products for head gaskets, oil leaks, power steering, and transmission — directly overlapping with Bar's Leaks' product portfolio and DIY retail distribution model.
• J-B Weld: J-B Weld is a leading two-part epoxy and adhesive brand used for automotive, plumbing, and industrial repairs. It competes in adjacent chemical repair categories (cracked blocks, manifolds, gaskets) often used as alternatives to Bar's Leaks' liquid sealants.
• Motor Medic: Motor Medic produces a focused line of automotive chemical repair products including stop-leak, oil, fuel, and cooling system treatments. It is a direct competitor in the DIY leak repair category with similar retail distribution.
• Lucas Oil: Lucas Oil produces a broad range of automotive additives, oil treatments, and stop-leak products sold through the same auto parts and mass-market retail channels as Bar's Leaks, with comparable DIY consumer positioning.
• K-Seal: K-Seal is a direct competitor specializing in chemical cooling system and head gasket repair products. It competes head-to-head with Bar's Leaks in the DIY stop-leak category, particularly in the U.S. and U.K. markets, with similar one-step antifreeze-compatible formulations.

Emerging players

• Bar's Pro Products (private label / import equivalents): Various retailer private-label and import stop-leak brands (e.g., O'Reilly, AutoZone, and ImportDoctor-branded sealants) compete on price at the same shelf positions, often formulated to mimic the leading brands including Bar's Leaks.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/barsleaks
• Facebookfacebook.com/barsleaks

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Bar’s Leaks